RT Journal Article
T1 Characterization of synthetic virgilite-petalite mixed crystals by thermoluminescence and X-ray diffraction
A1 Correcher, V.
A1 Gomez Ros, J.M.
A1 Garcia Guinea, J.
A1 Crespo Feo, María Elena
AB This paper reports on the dose response and fading effect of the blue thermoluminescence (TL) emission of lithium-rich aluminosilicates (virgilite-petalite mixture) synthesized by sol-gel method and characterised by means of X-ray diffraction. This material could be potentially valid for dose assessment since: (i) it is sensitive to ionising radiation, (ii) the dose dependence in the range of 0.5-5 Gy exhibits an acceptable linearity and (iii) the stability of the TL signal, after four months of storage, shows an initial rapid decay (ca. 55%) maintaining similar relative intensities from 40 to 50 days onwards. The structure of the TL emission has been analysed by means of a computerized glow curve fitting method based on general order kinetics. The calculation of the trapping parameters of each of the four glow peaks appearing at 80, 95, 110 and 125 °C (i.e. trap depth in eV, E; frequency factor in s-1, s, and the order of kinetics, b) indicates that cannot be fitted to a typical first or second order kinetics; the estimated b values are between 1.1 and 1.8.
PB Elsevier
SN 0254-0584
YR 2009
FD 2009-07
LK https://hdl.handle.net/20.500.14352/43567
UL https://hdl.handle.net/20.500.14352/43567
LA eng
NO Comisión Interministerial de Ciencia y Tecnología
NO Comunidad de Madrid
DS Docta Complutense
RD 9 abr 2025